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Finding the Fourth Proportional to 172,440.80, 258,855.60 and 102,359.60

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Solution

The fourth proportional to 172,440.80, 258,855.60 and 102,359.60 is: 153,654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,440.80 : 258,855.60 = 102,359.60 : x
  2. Step 2: Convert to fraction form
    172,440.80/258,855.60 = 102,359.60/x
  3. Step 3: Cross multiply
    172,440.80x = 258,855.60 × 102,359.60
  4. Step 4: Simplify right side
    172,440.80x = 26,496,355,673.76
  5. Step 5: Solve for x
    x = 26,496,355,673.76/172,440.80
  6. Step 6: Final answer
    x = 153,654.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.